<!DOCTYPE html>
<html lang="zh">
<head>
	<meta charset="UTF-8" />
	<title>Document</title>
	<?php
	     $re=mt_rand(1,3);		
		?>
	<link rel="stylesheet" type="text/css" href="<?php echo $re.'.css'?>"/>
</head>
<body>
	<div id="box">
		
	</div>
	
	
</body>
</html>